package com.demo.security.securitybrowser;

import com.demo.security.securitybrowser.support.SimpleResponse;
import com.demo.security.securitycore.properties.SecurityProperties;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.savedrequest.HttpSessionRequestCache;
import org.springframework.security.web.savedrequest.RequestCache;
import org.springframework.security.web.savedrequest.SavedRequest;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author : luofeng
 * @date : Created in 2019/3/19 16:56
 * @description :
 */
@RestController
@Slf4j
public class BrowserSecurityController {

    private RequestCache requestCache = new HttpSessionRequestCache();

    private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

    @Autowired
    private SecurityProperties securityProperties;



    /**
     *  当需要身份认证时跳转到这里
     */
    @RequestMapping("/authentication/require")
    @ResponseStatus(code = HttpStatus.UNAUTHORIZED)
    public SimpleResponse requireAuthentication(HttpServletRequest request, HttpServletResponse response) throws IOException {

        SavedRequest savedRequest = requestCache.getRequest(request,response);
        if(savedRequest != null){
            String target = savedRequest.getRedirectUrl();
            log.info("引发跳转的请求URL："+target);
            if(StringUtils.endsWithIgnoreCase(target,".html")){
                redirectStrategy.sendRedirect(request,response,securityProperties.getBrowser().getLoginPage());
            }

        }
        return new SimpleResponse("访问的服务需要身份认证信息，请引导用户到登录页");
    }

}
